For the record, I don't think what your son said was racist, in fact there is a lot of truth to it which I will elaborate on. The setting for it was all wrong though. You can't make comments like that in a school, or around someone who will rat you out. America is trying hard to stop racism and unfortunately your kid is in the crossfire.
China DOES have a disgusting political agenda, unacceptable living standards, terrible environmental laws, and so on and so on and so on and so on. I would say China is the most damaging and backwards nation on the planet, much more so than the West.....despite most of its actions being to provide consumer goods for the West. Racially, the Chinese are great people, but unfortunately the Chinese government has more to do with the Chinese than the Chinese themselves.....
So in that sense, your son is a visionary and would have a case and much evidence for what he said. But the fact remains that racism is serious and in a school setting any remarks on race should not be tolerated.
On a scale of 1-10 on seriousness, what your son said was a 1.
I am white, and I am offended by people who are racist towards Native Americans, Blacks, Asians, and Whites. It is when we are kids that those values are instilled in us, and schools know that. What your son is going through is for the greater good, which is why he should get over it.
I do like to spread the truth, however, and this elaborates on Chinese policy affecting its people much better than I can with words.
******GRAPHIC VIDEO*******
http://www.youtube.com/watch?v=UqVYUzHc5L8
This is a video of a young Chinese girl being run over. It expands on the point I am making that China has more to do with the Chinese than the Chinese.....
In the video a young girl is run over, the car stops, and continues to run over her and drive off. A dozen people walk right by her in the street, bikes ride past her. Another truck runs over her as if she was simple road kill.
But there is more to the story....in China, if you injure someone, it is basically an honor-system that you must pay for their medical bills for the rest of their life. It makes more economical sense to kill someone in a situation like this, than to take them to the hospital.
Because of Chinese regulations, it leaves no room for people doing the right thing because they could lose everything by being good people.
It was a rag collector, who had nothing to lose, who moved her from the street and then the mother came by.
The ones who are the lowest in society are the only ones free to do the right things.
So in conclusion....your son is right even if he doesn't know all the details. China can be a monster....and not by the choice of the Chinese. But school isn't the place to voice those opinions....much to my disappointment.